Dissociating Consciousness From Inhibitory Control: Evidence for Unconsciously Triggered Response Inhibition in the Stop-Signal Task

Theories about the functional relevance of consciousness commonly posit that higher order cognitive control functions, such as response inhibition, require consciousness. To test this assertion, the authors designed a masked stop-signal paradigm to examine whether response inhibition could be trigge...

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Bibliographic Details
Published in:Journal of experimental psychology. Human perception and performance 2009-08, Vol.35 (4), p.1129-1139
Main Authors: van Gaal, Simon, Ridderinkhof, K. Richard, van den Wildenberg, Wery P. M, Lamme, Victor A. F
Format: Article
Language:English
Subjects:
Adolescent
Adult
Awareness
Biological and medical sciences
Child clinical studies
Cognitive Control
Cognitive Processes
Consciousness
Developmental disorders
Experimental psychology
Experiments
Female
Fundamental and applied biological sciences. Psychology
Human
Humans
Inhibition
Inhibition (Psychology)
Inhibitory processes
Magnitude
Male
Medical sciences
Mental Processes
Perception
Perceptual Masking
Priming
Psychology. Psychoanalysis. Psychiatry
Psychology. Psychophysiology
Psychopathology. Psychiatry
Reaction Time
Reaction times
Response Inhibition
Sensory perception
Signal Detection, Psychological
Signals
Stimuli
Tests
Theory
Vision
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Summary:Theories about the functional relevance of consciousness commonly posit that higher order cognitive control functions, such as response inhibition, require consciousness. To test this assertion, the authors designed a masked stop-signal paradigm to examine whether response inhibition could be triggered and initiated by masked stop signals, which inform participants to stop an action they have begun. In 2 experiments, masked stop signals were observed to occasionally result in full response inhibition as well as to yield a slow down in the speed of responses that were not inhibited. The magnitude of this subliminally triggered response time slowing effect correlated with the efficiency measure (stop signal reaction time) of response inhibition across participants. Thus, response inhibition can be triggered unconsciously-more so in individuals who are good inhibitors and under conditions that are associated with efficient response inhibition. These results indicate that in contradiction to common theorizing, inhibitory control processes can operate outside awareness.
ISSN:0096-1523
1939-1277
DOI:10.1037/a0013551